Teaching/Outreach

Lectures

Development of Quantum Mechanics (PHYS2300), Spring 2024 and 2025

Description

This course introduces the theories and associated experimental evidence that form the basis of our current understanding of the physical world beyond our everyday experience – quantum mechanics and relativity. We will examine the historical context and discuss experimental results that led to the development of these theories in the early 20th century. We will study the development of these theories, and consider their application in the areas of atomic, molecular, and optical (AMO) physics and nuclear physics. Finally, the concept qubit is introduced.

Physics for Engineers I (PHYS1501), Fall 2023

Description

Introduction to Newton’s laws, their extensions, and applications. Concepts such as work, mechanical energy, linear and angular momentum, and energy conservation are explained. Basic concepts of calculus are used. Recommended for prospective Engineering majors. 

Quantum Physics Demos

Mach-Zehnder interferometer

Description
Mach-Zehnder interferometer to demonstrate interference and superposition. In the next iteration, the laser intensity will be strongly reduced so that the average number of photons present in the interferometer is <1 and the screen will be replaced by a photon counter or a single-photon camera. In this case, when a photon is detected, we know that it was alone when it went through the interferometer.

Info
This set-up was built by our undergraduate student (freshman) Leilani Ainsworth.

Mach-Zehnder interferometer in function
Interference pattern
Quantum Eraser Demo

Description
Based on a two-path Mach-Zehnder interferometer. We show that by observing which path a photon takes (i.e., acquiring the which-path information) will destroy the interference pattern. We also show that erasing the which-path information restores the interference pattern!

Quantum Eraser Demo under testing before traveling to an outreach event (Science Center STEM Career Showcase, Hartford, CT)
Inside of Quantum Eraser Demo Box.
The which-path information has been deleted on right (with respect to the viewer) output, where the interference is clearly visible.

Outreach events

STEM Career Showcase @ CT Science Center, December 3rd, 2024

We participated in the STEM career showcase organized by the Connecticut Science Center with a participation of ~1300 middle and high school students from CT and MA!
We brought our two hands-on Quantum Demo:
1) the Polarization “Paradox”, where paradox is in quotation marks as this effect is scientifically well understood while being counterintuitive at a the first sight.
2) A Quantum Eraser demo in a Mach-Zehnder Interferometer (without individual photon resolution yet…).

2nd graders field trip, Spring 2024

2nd graders from Mansifield school system visited the UConn Physics Department and they explored, hands-on, various fields of physics.